Performance
· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
300 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
731 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
344 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
733 ms
Page Load Progression
BJS Execution Cost514ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 198ms | 49ms | 0ms | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/9054c84ba21a4c14.js | 197ms | 128ms | 4ms | 1st |
| https://dragdrivesimulator.org/ | 119ms | 2ms | 4ms | 1st |
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
APage Weight Budget874 KB transferred, 117 requestsPASS
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
A+Third-Party Impact1% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization2 images, 0 KB saveablePASS
A+Font Loading1 fonts (48 KB)PASS
Web fonts
1
48 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
A+JS Bundles12 scripts, 28 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://dragdrivesimulator.org/_next/static/chunks/4c86ddcf3a767f1a.js | 69 KB | 28 KB (41%) | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/c8fe31dcfd3f3ef5.js | 4 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/82abf2d65f5428ae.js | 8 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/9054c84ba21a4c14.js | 36 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/turbopack-a863e30129845be2.js | 5 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/f1e68c2c50004c78.js | 15 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/ff1a16fafef87110.js | 1 KB | — | ✓ | 1st |
| https://dragdrivesimulator.org/_next/static/chunks/d2be314c3ece3fbe.js | 8 KB | — | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496 | 11 KB | — | ✓ | 3rd |
| https://dragdrivesimulator.org/_next/static/chunks/30c0f7f1d91392f5.js | 1 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory117 resources · 874 KB · 28 KB savings availablePASS
~28.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 117 resources | 874.1 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall117 requests over 1406msINFO
Image Optimization2 images, 961 KB total, 427 KB wastedINFO
Image Optimization Audit
Total Images
2
Total Size
961 KB
Oversized
1
Wasted
427 KB